EP0479334A3 - Device for detecting and measuring small amounts of charge or current - Google Patents

Device for detecting and measuring small amounts of charge or current Download PDF

Info

Publication number
EP0479334A3
EP0479334A3 EP19910119980 EP91119980A EP0479334A3 EP 0479334 A3 EP0479334 A3 EP 0479334A3 EP 19910119980 EP19910119980 EP 19910119980 EP 91119980 A EP91119980 A EP 91119980A EP 0479334 A3 EP0479334 A3 EP 0479334A3
Authority
EP
European Patent Office
Prior art keywords
charge
sub
collecting electrode
integrated circuit
amplifying
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP19910119980
Other versions
EP0479334A2 (en
Inventor
Arthur E. Uber, Iii
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayer Medical Care Inc
Original Assignee
Medrad Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Medrad Inc filed Critical Medrad Inc
Publication of EP0479334A2 publication Critical patent/EP0479334A2/en
Publication of EP0479334A3 publication Critical patent/EP0479334A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J47/00—Tubes for determining the presence, intensity, density or energy of radiation or particles
    • H01J47/02—Ionisation chambers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
    • G01T1/16—Measuring radiation intensity
    • G01T1/185—Measuring radiation intensity with ionisation chamber arrangements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T7/00—Details of radiation-measuring instruments
    • G01T7/12—Provision for actuation of an alarm
    • G01T7/125—Alarm- or controlling circuits using ionisation chambers, proportional counters or Geiger-Mueller tubes, also functioning as UV detectors

Landscapes

  • Spectroscopy & Molecular Physics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Molecular Biology (AREA)
  • Physics & Mathematics (AREA)
  • Measurement Of Radiation (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Electron Sources, Ion Sources (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Photoreceptors In Electrophotography (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)

Abstract

A device for detecting and measuring small amounts of charge or current. The device comprises at least one charge detection subassembly (1,n) with an integrated circuit (100,120,130), a collecting electrode (110,E₁,155,170) that comprises an electrically conductive sense pad mounted on said integrated circuit (100,120,130) for collecting charge accumulated thereon, an amplifying means (20,T<sub>o</sub>,157,174,176) for generating a signal representative of the collected charge. Said amplifying means including an input transistor (T<sub>o</sub>) mounted on said integrated circuit and electrically connected to said collecting electrode (170). A controlled discharge means (176,T₁, T₂) is provided for removing charge from said collecting electrode (170). Furtheron means (22,24,186, 188) are provided for minimizing inaccuracies in said device due to leakage currents to said collecting electrode (110,E₁,155,170) from said controlled discharge means or said amplifying means. The device additionally comprises interface means for (36, 174, 212) buffering said signal from said amplifying means, detector control means (30,184) for controlling said discharge means, and means for supplying power (173, 206) to said amplifying means, said controlled discharge means, and said detector control means.
EP19910119980 1987-01-27 1987-12-08 Device for detecting and measuring small amounts of charge or current Withdrawn EP0479334A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/007,195 US4804847A (en) 1987-01-27 1987-01-27 Radiation detector with an ionizable gas atop an integrated circuit
US7195 1987-01-27

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP87118193.9 Division 1987-12-08

Publications (2)

Publication Number Publication Date
EP0479334A2 EP0479334A2 (en) 1992-04-08
EP0479334A3 true EP0479334A3 (en) 1993-02-24

Family

ID=21724754

Family Applications (2)

Application Number Title Priority Date Filing Date
EP87118193A Expired - Lifetime EP0281676B1 (en) 1987-01-27 1987-12-08 Radiation detector with an ionizable gas atop an integrated circuit
EP19910119980 Withdrawn EP0479334A3 (en) 1987-01-27 1987-12-08 Device for detecting and measuring small amounts of charge or current

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP87118193A Expired - Lifetime EP0281676B1 (en) 1987-01-27 1987-12-08 Radiation detector with an ionizable gas atop an integrated circuit

Country Status (6)

Country Link
US (1) US4804847A (en)
EP (2) EP0281676B1 (en)
JP (1) JPS63308591A (en)
AT (1) ATE88815T1 (en)
CA (1) CA1288529C (en)
DE (1) DE3785666T2 (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5065031A (en) * 1988-07-07 1991-11-12 The Harshaw Chemical Company Personnel TL dosimetry method and apparatus for determination of risk related quantity
US5053624A (en) * 1990-07-18 1991-10-01 Stanley Kronenberg Radon control system
US5059803A (en) * 1990-07-19 1991-10-22 The United States Of America As Represented By The Secretary Of The Army Rugged alpha particle counter
US5500534A (en) * 1994-03-31 1996-03-19 Iowa State University Research Foundation Integrated energy-sensitive and position-sensitive x-ray detection system
US6107632A (en) * 1998-03-23 2000-08-22 The United States Of America As Represented By The Secretary Of The Navy Microminiature neutron detector
US6402689B1 (en) 1998-09-30 2002-06-11 Sicel Technologies, Inc. Methods, systems, and associated implantable devices for dynamic monitoring of physiological and biological properties of tumors
US6353324B1 (en) 1998-11-06 2002-03-05 Bridge Semiconductor Corporation Electronic circuit
US6414318B1 (en) 1998-11-06 2002-07-02 Bridge Semiconductor Corporation Electronic circuit
WO2002009775A2 (en) 2000-08-02 2002-02-07 Sicel Technologies, Inc. Evaluation of irradiated foods or other items with telemetric dosimeters and associated methods
AU3659002A (en) * 2000-11-09 2002-05-21 Sicel Technologies Inc Methods, circuits and compositions of matter for in vivo detection of biomolecule concentrations using fluorescent tags
US7011814B2 (en) * 2001-04-23 2006-03-14 Sicel Technologies, Inc. Systems, methods and devices for in vivo monitoring of a localized response via a radiolabeled analyte in a subject
US7557353B2 (en) * 2001-11-30 2009-07-07 Sicel Technologies, Inc. Single-use external dosimeters for use in radiation therapies
JP4607859B2 (en) * 2003-02-19 2011-01-05 サイセル・テクノロジーズ，インコーポレイテッド In vivo fluorescent sensor, system and related methods operating in conjunction with a fluorescent analyte
WO2008083313A2 (en) 2007-01-01 2008-07-10 Medrad, Inc. Methods and systems for integrated radiopharmaceutical generation, preparation, transportation, and administration
US7669883B2 (en) * 2007-03-29 2010-03-02 Newfrey Llc Air bag bracket/fastener
JP5072718B2 (en) * 2008-06-02 2012-11-14 株式会社東芝 Signal receiving device
FR2939968B1 (en) * 2008-12-17 2013-06-07 Eads Europ Aeronautic Defence ELECTRIC GENERATOR EXCITED BY COSMIC RADIATION.
BR112012031359A2 (en) 2010-06-04 2016-10-25 Medrad Inc system and method of planning and monitoring the use of multiple dose radiopharmaceuticals in radiopharmaceutical injectors
WO2018234610A1 (en) 2017-06-20 2018-12-27 Heikki Sipilä Oy A gas drift detector
US11105936B2 (en) 2017-05-03 2021-08-31 Heikki Sipila Oy Gas drift detector
EP3841404A1 (en) * 2018-08-21 2021-06-30 Thermo Fisher Scientific Messtechnik GmbH Electronic dosimeter for alarm generation in pulsed radiation fields

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3366790A (en) * 1964-03-09 1968-01-30 Harry A. Zagorites Nuclear radiation detector comprising multiple ionization chamber with hemisphericalshaped electrodes
RO63928A2 (en) * 1976-07-20 1980-03-15 Institutul National Pentru Creatie Stiintifica Si Tehnica,Ro CONTEINER WITH HIGH CAPACITY FOR PNEUMATIC TRANSPORT
US4342913A (en) * 1980-07-07 1982-08-03 Selco Inc. Portable radiation dosimeter
US4490614A (en) * 1982-04-30 1984-12-25 Interad Systems, Inc. Housing for an ionization detector array in a tomographic scanner
CA1212785A (en) * 1983-10-21 1986-10-14 Zbigniew Turlej Ionization smoke detector
JPS60108783A (en) * 1983-11-18 1985-06-14 Fuji Electric Co Ltd Radiation monitor system
JPS6148784A (en) * 1984-08-16 1986-03-10 Yutaka Murata Radiation measuring device
US4642463A (en) * 1985-01-11 1987-02-10 Thoms William H Intelligent radiation monitor

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
HEALTH PHYSICS vol. 49, no. 1, July 1985, OXFORD GB pages 88 - 91 K. NISHIZAWA ET AL. 'Digital monitoring system for a radioisotope laboratory using a personal computer' *
IEEE TRANSACTIONS ON NUCLEAR SCIENCE vol. NS-26, no. 4, August 1979, NEW YORK US page 45964600 J. SOMERS ET AL. 'A multichannel electrometer data-acquisition system' *

Also Published As

Publication number Publication date
CA1288529C (en) 1991-09-03
DE3785666D1 (en) 1993-06-03
EP0281676A1 (en) 1988-09-14
DE3785666T2 (en) 1993-09-16
JPS63308591A (en) 1988-12-15
EP0281676B1 (en) 1993-04-28
ATE88815T1 (en) 1993-05-15
EP0479334A2 (en) 1992-04-08
US4804847A (en) 1989-02-14

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